Large Document Support Is Coming to Adobe Express: What Add-on Developers Need to Know

Large Document Support is an important capability for enterprise customers who want to work on bigger and more ambitious projects.

Adobe Express will therefore roll out support for larger, more sophisticated documents over the coming months. As this evolves, developers will soon see new APIs and patterns that reflect how Adobe Express will handle these richer document experiences going forward.

This is an exciting opportunity for add-on developers to prepare now, so your add-ons can participate in these more advanced creative workflows as the platform evolves.

What this means for add-on developers

While Large Document Support in Adobe Express will begin rolling out in the next few months, we’re intentionally taking a phased approach to minimize disruption. The detailed migration guidance can be found in the documentation.

Existing marketplace add-ons are not expected to break overnight. Instead, developers whose add-ons are impacted will have a transition period (up to six months) to understand the changes, update their implementations, and republish before enforcement begins.

Here’s the simplest way to think about what to do next:

  1. Assess your add-on. Review the documentation and determine whether your add-on uses patterns that may be affected by Large Document Support.
  2. If your add-on is impacted, plan your transition. Review the migration guidance, understand the rollout phases, and use the migration window to update and resubmit your marketplace version.
  3. If your add-on is not impacted, no action is needed today. Stay informed as additional guidance becomes available.

These are the types of workflows that are most likely to be affected:

  1. Performing actions across multiple pages
  2. Traversing content throughout a document
  3. Modifying document content outside the active page
  4. Relying on assumptions that the entire document is always available

If your add-on falls into one of these categories, we recommend following the guidance closely.

The milestone dates are planning targets and may shift as the rollout proceeds. Treat the sequence and the actions as stable; confirm exact dates against the latest announcements before planning around a specific deadline.

Stay informed

The goal of Large Document Support is to help Adobe Express scale reliably as projects become more sophisticated. That means the way some content is loaded and accessed may change, and add-ons that assume everything is always available may need to evolve with it.

For now, the most important thing is awareness. If your add-on depends on document traversal, inactive-page access, or other document-wide behaviors, visit the documentation and follow future updates closely. If it doesn’t, there’s nothing you need to do.

We will continue to share updates as more details become available. In the meantime, please treat this as an early heads-up rather than a migration notice.